VoIP Router/Gateway Requirements

To deliver the best VoIP product, we have a selection of approved hardware and VoIP requirements that work together to continue to improve your Masiero Voice experience.

Technical Aspect Requirements

1. Disable SIP ALG.
   
   
   • This is the most important and critical setting to change.
   • This is also known as SIP Transformations.
     
     
2. Ensure the router/firewall does not block the phones' NAT Binding/Keep-Alive packets that are sent every 15 seconds.
   
   
   • Most routers do not block the phones' Keep-Alive packets by default, but may on high-end firewalls.
   • Some firewalls do not have an option to allow the packets, so an alternate solution is to set the phone's UDP session timeout to 300 seconds, since the phones send a SIP packet re-registration request every 5 minutes.
     
     
3. Ensure that internet traffic is not blocked on ports: 5060 or 5062
   
   Request your Internet Service Provider create a Port-forwarding rule to allow internet traffic inbound/outbound on port 5060.
   
4. The phones and other Masiero Voice devices must be behind a NAT-enabled firewall and must get their private IP addresses via DHCP or Statically assigned.
   
   
5. Allow WAN pings from our Call Quality Monitoring Servers.
   
   
   • This is needed for call quality monitoring and troubleshooting purposes.
     
6. Ample amount of bandwidth to allow for stable connectivity and communication.
   
   
   • Learn more by viewing our VoIP Bandwidth Requirements HC Article.
     
     

NOTE: These are advance options that are managed at the gateway level of a Masiero Voice Network and required for optimum experience when connecting a phone or soft phone from an un-managed network.